A cobpobation of new jebsey



Patented May 10, 1921.

2 SHEETS--SHEET l.

LAQLAMONT.

RAILWAY CARIRUCK. APPLICATmN man n-Ec.27, 1920.

1,377,704. Patented May 10,1921.' I

2 SHEETS-SHEET 2.

@WWW/Wyk@ UNITED STATES g PATENT OFFICE.

JOHN A. LAMONT, 0F CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN STEEL VFOUNIDRIES CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY. Y

RAILWAY- CAR TRUCK.

Specification of Letters Patent.

i I Application led December 27, 1920. Seria1 No. 433,412.

To all whom 'it may concern:

Be it known thatI, JOHN A. LAMoN'r, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Railway- Car Trucks, of which the following is a specification.

This invention relates to railway car trucks.

One object of the invention is to provide a simple, durable and eilicient railway car truck of the six-.wheel live equalizing type having a minimum wheel base to facilitate the rounding of curves.

Another object is to provide such 'a car truck as mentioned wherein simple and im-` proved means for the equalizing of loads are provided.

Another object is to provide a railway car' truck having its various parts arranged in a manner to coperate to meet all of the requirements of service conditions.

These and other objects are accomplished by means of the arrangements disclosed on the accompanying sheets of drawings, in which- Figure 1 is a side elevation of a railway car truck embodying my invention;

Fig. 2 isa detail sectional view taken in the plane of line 2-2 of Fig. 1;

Fig. 3 is a detail sectional View taken in the plane of line 3-3 of Fig. 1;

F 1g. 4 is a fragmentary longitudinal sectional viewv taken through the side frame and associated parts; and,

Fig. 5 isa top plan view of the same arrangement, parts being in section, when taken along the line 5 5 of Fig. 4, for the sake of clearness.

VThe various novel features of my invention will beapparent from the following description and drawings and will be particularly pointed out in the appended claims.

Referring to the figures of the drawings, it will be noted thaty the side frame 10 is in a single piece and is provided with three journal box openings, theend journal box openings l1 `and the center journal box opening 12. Midway between these journal box openings the side frame is provided with two bolster openings 13 for the reception of the end portions or legs 14 of the bolster.,

The end journalboxes 14 are substantially the same as those disclosed in my copending application, Serial No. 422,463, filed November 8, 1920. Sufce it to say that springs 15 areV interposed between laterally extendingv brackets 16 on the journal boxes and socket portions 17 formed on the side frames, saidv journal boxes having side flanges 18 embracing opposite sides of the side frame for maintaining their relative lateral positions within certain predeterminedn limits. The center journal box 19 has two laterally arranged pockets 20 on opposite sides of the center journal 21, the outer end walls 22 of the journal box rising to a height to completely inclose the springs 23 located within the box 19. A spring cap 24 bridges the springs 23 on opposite sides of the journal 21 and is arranged to move vertically within the end walls 22 of the spring box. The spring cap is provided with bosses 25 which extend downwardly within the springs 23 for retaining the springs in place within certain predetermined limits. At each end of the spring cap and intermediate the projections 25 is an opening 26 for a purpose to be referred to hereinafter. The intermediate portion of the spring cap is provided with a curved seat 27 for rockably receiving a pivotal projection 28 on an equalizing beam 29. The outer ends of the equalizing beam are bifurcated for the reception of eye portions 30 of hanger rods 31, the upper ends of said hanger rods being pivotally connected to the ends of said equalizing beam by any suitable pins 32 located in the bifurcated portions of said beam. These hanger rods extend vertically downwardly through the associated springs 23 and through openings 33 in the lower ends of spring pocketsV 20. Each of the lower ends of the hanger rods 31 is provided with an eye portion 34 through which a key or pin 35 extends. Each hanger rod 31 extends through a vertical opening 36 in the asso ciated end of an equalizing lever 37, the same end of each of which is provided with a socket portion 38 in vertical alinement with its opening 36 and rests upon and receives the associated key 25 of the associated hanger rod whereby one end of each of the equalizing levers 37 is supported by a hanger rody which in each instance is suspended from the equalizing beam 29 rockably supported upon the spring' cap 24, which rests upon the springs 23 mounted in the central journal box 19. The opposite ends of each of the equalizing levers 37 is provided with a groove or seat 38 which pivotally rests upon V37 or the bolster.

a pin 39 extending between side walls 40 of theside frame 10, as best shown in Fig. 3. For the most part each equalizing lever is horizontal throughout its length with the eX- ception of the outer ends, which curve upwardly and terminate in the seat portions 38, which rest upon the pins 39. The bolster legs 14, which have the lower curved `bearing portions 41, are rockably-received centralized inthe bolster pockets to permit free vertical movement and in a manner whereby two-thirds oit' the load transmitted through each bolster leg will be transmitted outwardly toward the end journal. As a result oi this equalizing arrangement the spring cap and equalizing beam serve to equalize the load between the center springs and also equalizes the load between the ends of the bolsters. By using this equalizing beam 29 an even distribution to the four ends of the bolster of the load on the center plate is insured. Without the use of the equalizing beam it would be possible for the bolster center plate load to be concentrated on two, or possibly three, of the four legs. This equalizing beam instantaneously adjusts any dierence in load on the four legs, which is caused by unevenness of the track, etc. As mentioned above, the fulcrum pins 39 are located relativef to the bolsters 14 to give a two to one leverage, which establishes the equalizing of the load between the journal bearings. The vertical position oi the iulcrum pins 39 is practically in the same horizontal plane with the engaging surface of the bolster and equalizing levers, so that the up and down movement of the equalizing levers 37 produces as nearly as possible a vertical movement of the bolster. Also, in con-V nection with the question of equalizing and movement of the equalizing parts, attention is called to the fact that the lower ends of the hanger rods 31 in effect are lower ends oi' pendulums, the lower ends, however, being stationary, while the upper ends swing in rounding a curve. In this way no lateral movement is given to the equalizing levers A liberal allowance is made for relative lateral or lengthwise-movement of the center journal box with respect to the side frame for facilitating rounding a curve.

By means of this arrangement, I am able to increase the available space for the end possible dimension consistent with proper space requirements for brakes and end width of bolster members to secure proper transverse strength. Furthermore, if springs were arranged directly between the 'bolster members andequalizing levers, greater width of the bolster members would be necessary to accommodate vsuch springs and consequently the length of the equalizing levers would have to be increased and the wheel base correspondingly increased. j

There may be various modiiications of the invention and it is my intention to cover all such modifications which do not involve a departure from theV spirit and scope of theollowing claims.

I claim: j

1. In a railway car truck of the six-wheel type, the combination of a side Jframe having spaced bolster openings, an intermediate journal box, equalizing levers pivotally supported on said side frames and operatively connected to said journal boX for transmitting a load thereto, and bolster members in said openings mounted directly on said levers for transmitting loads therethrough for reducing the width of the bolster, increasing the space for brakes, and reducing the wheel base.

2. In a railway car truck of the six-wheel type, the combination of a side frame, an intermediate journal boX, equalizing levers .pivotally supported on said Vside frame and operatively connected to said journal box for transmitting a load thereto, and bolster members mounted directly on said equalizing levers for transmitting loads therethrough for reducing the width of the bolster, increasing the space for brakes, and reducing the wheel base.

3. In a railway car truck of the six-wheel type, the combination of a side frame, an end journal box, resilient means interposed between said sideV frame and end journal box, an intermediate journal box, an equalizing lever supported at its outer end and having its other end operatively connected to said journal box for transmitting a load thereto, and a bolster member mounted directly on said equalizing lever for transmitting a load therethrough vfor reducing the width of the bolster, increasing the space for brakes, and reducing the wheel base.

4. In a railway car truck, the combination of a side frame having a bolster opening, a journal box, an equalizing lever pivotally supported on said side frame and operatively connected to said journal box for transmitting a load thereto, and a bolster member mounted directly on saidequalizing lever and engaging same in a plane such that the movement of the bolster within the bolster opening is substantially vertical.

5. In a railway car truck, the combination of a side frame having a bolster opening, a journal box, a rigid equalizing lever supported at one end and operatively connected to said journal box at its other end for transmitting a load thereto, and a bolster member positioned on said equalizing lever whereby a load is transmitted therethrough and whereby the bolster member may move vertically in the bolster opening.

6. In a railway car truck of the six-wheel type, the combination of a side frame having bolster openings and an opening for an intermediate journal box, Va journal box mounted in said opening, an equalizing beam for transmitting a load to said intermediate journal box, equalizing levers, each pivoted at one end to said side frame and having the other end thereof operatively connected to said equalizing beam, and bolster portions movably vmounted insaid bolster openings and mounted on said equalizing levers for transmitting a load therethrough.

In a railway car truck of the six-wheel type, the combination of a side frame having bolster openings and an opening for an intermediate journal box, a journal box mounted in said opening, an equalizing beam for transmitting a load to said intermediate journal box, equalizing levers, each pivoted at one end to said side frame andhaving the other end thereof operatively connected Ato said equalizing beam, bolster portions movably mounted in said bolster openings and mounted on said'equalizing levers for transmitting a load therethrough, and means for positioning said bolster portions on said equalizing levers.

8. In a railway car truck of the six-wheel type, the combination of an intermediate journal box, resilient means carried by said journal-box, an equalizing beam supported by said resilient means for transmitting loads to said journal box, equalizing levers, one end of each of which is supported directly from the side frame and the other end of each of which is operatively connected to the equalizing beam, and bolster portions carried directly by said equalizing levers for transmitting the load therethrou h.

9. n a railway car truck of the six-wheel type, an intermediate journal box, an equalizing lever, one end of which is supported and the other end of which is operatively connected to said journal box for transmitting a load thereto, and a bolster member mounted on said equalizing lever for transmitting a load therethrough, said equalizing lever and bolster member having coperating curved portions for permitting a rocking movement of one with respect to the other.

10. In a railway car truck of the six-wheel type, an intermediate journal box, an equalizing lever, one end of which is supported and the other end of which is operatively connected to said journal box for transmitting a load thereto, and a bolster member mounted on said equalizing lever for transmitting a load therethrough, said equalizing lever and bolster member having coperating curved portions for permitting a rocking movement of one with respect to the other, said equalizing lever and bolster member also having cooperating portions for positioning one with respect to the other.

11. In a railway truck of the six-wheel type, the combination of an intermediate journal box, springs supported by said j ournal box on opposite sides of the associated journal, a spring cap bridging said springs, an equalizing beam mounted on said cap, hanger rods pivotally connected to said equalizing beam on opposite sides of its center, and equalizing levers each pivotally supported at one end and each connected at its opposite end to said hanger rods whereby the loads transmitted through said levers may be equalized.

Signed at Chicago, Illinois, this 15th day of December, 1920.

JOHN A. LAMONT. 

